International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 06 Issue: 03 | Mar 2019 www.irjet.net p-ISSN: 2395-0072 © 2019, IRJET | Impact Factor value: 7.211 | ISO 9001:2008 Certified Journal | Page 2927 SUITABILITY OF BLAST FURNACE SLAG IN CONCRETE Mr. A. B. Sawant 1 , Ms. V. H. Lavangare 2 , Mr. S. M. Kolekar 3 , Mrs. Anagha A. Sawant 4 1,2,3 Assistant Professor, Civil Engineering Department, K.I.T’s College of Engineering, Kolhapur, INDIA 4 Practice Civil Engineer, Kolhapur, INDIA ----------------------------------------------------------------------***--------------------------------------------------------------------- Abstract - To meet the global demand of concrete in the future, it is becoming a more challenging task to find suitable alternatives to natural aggregates for preparing concrete, hence the use of alternative sources for natural aggregates is becoming increasingly important. Slag is a co-product of the iron making process. Iron cannot be prepared in the blast furnace without the production of its co-product i.e. blast furnace slag. The use of blast furnace slag aggregates in concrete by replacing natural aggregates is a most promising concept because its impact strength is more than the natural aggregate. Steel slag aggregates are already being used as aggregates in asphalt paving road mixes due to their mechanical strength, stiffness, porosity, wear resistance and water absorption capacity. Key Words: Slag, BFS Concrete 1 INTRODUCTION A detail investigation on steel slag concrete has been done by Jigar Patel (2008, at Cleveland state university), a detail has been submitted on GGBS as a cementitious constitute in concrete by ACI committee 223 in 2000. A study on GGBS chemical properties and its use with admixture has been conducted at Grace Construction product. A company name Beavers Valley’s produces their own processed slag, they successfully used in road construction and at the same time proved that the road is more abrasion resistive. Blast furnace slag is one of the major solid industrial wastes, and available in huge quantity about 10 million ton per year in India, which is non-biodegradable material. The cost almost negligible, only cost of crushing and transportation is considerable. A small amount of blast furnace is used in manufacturing of special type of cement. Concrete from such cement accomplishes good workability, high strength, and good durability, which are important factors for concrete performance. The original scope of this research was to investigate the properties of concrete with blast furnace slag aggregates. Hence this project has been carried out with these objectives. Experimental programme is planned to study the following objectives- a) The purpose of this research is to explore the feasibility of utilizing the blast furnace slag as a replacement for natural aggregate in the concrete. b) The original scope of this research is to investigate the properties of concrete with blast furnace slag aggregates. c) To study the effect on compressive strength, and the flexural strength of concrete with blast furnace slag. 2 SLAG- MANUFACTURING AND TYPES 2.1 Origin In the production of iron, iron ore, iron scrap, and fluxes (limestone and/or dolomite) are charged into a blast furnace along with coke for fuel. The coke is combusted to produce carbon monoxide, which reduces the iron ore to a molten iron product. When the blast furnace is tapped to release the molten iron, it flows from the furnace with molten slag floating on its upper surface. These two materials are separated using a weir, the molten iron being channeled to a holding vessel and the molten slag to a point where it into be treated further. The final form of the blast furnace slag is dependent on the method of cooling and can be produced in the following forms: a) Granulated; b) Air-cooled; c) Pelletised; and d) Foamed. Blast furnace slag is a nonmetallic co product produced in the process. It consists primarily of silicates, aluminosilicates, and calcium-alumina-silicates. The molten slag, which absorbs much of the sulfur from the charge, comprises about 20 percent by mass of iron production. The use of blast furnace slag aggregate in concrete has until recent years been confined mainly to the area adjacent to the steelworks. Over recent years blast furnace slag aggregate has begun to be used in concrete. Both blast furnace slag cement and air-cooled blast furnace slag aggregate have particular properties that can improve the performance of concrete. The use of these products can conserve our natural resources. Now and in the future, the specifiers and producers of concrete must look to the use of materials such as blast furnace slag to conserve our natural resources while maintaining a source of engineering quality materials for the construction industry.
SUITABILITY OF BLAST FURNACE SLAG IN CONCRETE
Apr 25, 2023
Welcome message from author
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Related Documents
